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Mycobacterium tuberculosis lpdC, Rv0462, induces dendritic cell maturation and Th1 polarization

Mycobacterium tuberculosis lpdC, Rv0462, induces dendritic cell maturation and Th1 polarization,10.1016/j.bbrc.2011.07.013,Biochemical and Biophysical

Mycobacterium tuberculosis lpdC, Rv0462, induces dendritic cell maturation and Th1 polarization  
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Mycobacterium tuberculosis, the etiological factor of pulmonary tuberculosis, causes significant morbidity and mortality worldwide. Activation of host immune responses for containment of mycobacterial infections involves participation of innate immune cells, such as dendritic cells (DCs). In this study, we demonstrated that the gene encoding lipoamide dehydrogenase C (lpdC) from M. tuberculosis, Rv0462, induce maturation and activation of DCs involved in the MAPKs signaling pathway. Moreover, Rv0462-treated DCs activated naïve T cells, polarized CD4+ and CD8+ T cells to secrete IFN-γ in syngeneic mixed lymphocyte reactions, which would be expected to contribute to Th1 polarization of the immune response. Our results suggest that Rv0462 can contribute to the innate and adaptive immune responses during tuberculosis infection, and thus modulate the clinical course of tuberculosis.
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